77353425046769 has 2 divisors, whose sum is σ = 77353425046770. Its totient is φ = 77353425046768.

The previous prime is 77353425046717. The next prime is 77353425046811. The reversal of 77353425046769 is 96764052435377.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57558578307169 + 19794846739600 = 7586737^2 + 4449140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77353425046769 is a prime.

It is a super-2 number, since 2×77353425046769² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77353425046699 and 77353425046708.

It is not a weakly prime, because it can be changed into another prime (77353425046969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38676712523384 + 38676712523385.

It is an arithmetic number, because the mean of its divisors is an integer number (38676712523385).

Almost surely, 2^{77353425046769} is an apocalyptic number.

It is an amenable number.

77353425046769 is a deficient number, since it is larger than the sum of its proper divisors (1).

77353425046769 is an equidigital number, since it uses as much as digits as its factorization.

77353425046769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800150400, while the sum is 68.

The spelling of 77353425046769 in words is "seventy-seven trillion, three hundred fifty-three billion, four hundred twenty-five million, forty-six thousand, seven hundred sixty-nine".